OLIV
a functional nutrition practice
Courtney Castler, MS-HNFM
Step beyond symptom management and cookie-cutter programs. OLIV helps you live in alignment with your highest potential — guided by science.
Restore your health with a root-cause approach
If you're tired of feeling tired, frustrated with your health, or stuck in a cycle of symptoms without real answers — you are not alone.
At OLIV we believe your health deserves more than a quick fix. We go beyond symptom management to uncover the root causes holding you back. Through advanced testing, personalized nutrition, and integrative therapies, we help you restore balance and reclaim the energy you deserve.
What to expect
Not a program. A lifestyle.
Founded by Courtney Castler, MS-HNFM — a functional nutritionist — OLIV was created to elevate the way people experience health: with precision, purpose, and ease. Our approach draws on genomics, biometrics, and functional nutrition to reduce disease risk, address current concerns, and unlock longevity.
Built around your biology
High Standards
We partner only with advanced diagnostic labs and supplement companies vetted for quality, precision, and scientific integrity.
Results-Driven
We are committed to measurable, meaningful change — pairing advanced tools with personalized strategy to help you reach your goals.
Science-Based
We stay current with clinical research and apply only proven, evidence-based methods that meet a high standard in functional medicine.
Comprehensive
Diagnostics, personal history, nutrition, and lifestyle come together into one roadmap built for lasting vitality and well-being.
“Working with OLIV has been truly transformative. For the first time I felt seen — not just as a client, but as a whole person. The detail, personalization, and care went far beyond anything I've experienced in healthcare.”Sarah M.
Vetted labs & partners
We carefully select companies that support the depth and integrity of your wellness journey.
Want to know more?
Making a health change can feel overwhelming. At OLIV we make it clear and simple — connect with us and we'll help guide you in the right direction.
Schedule a free consultation